title: Courses of dark adaptation and levels of vitamin A and carotene in normal and clinical conditions.
authors.forename: C
authors.initials: C
authors.lastname: SHEARD
mesh_terms: D002338:Carotenoids; D003623:Dark Adaptation; D006801:Humans; D014801:Vitamin A; D014815:Vitamins
chemical_list: D014815:Vitamins; D014801:Vitamin A; D002338:Carotenoids